Bump firrtl from `2f007ce` to `118711f` (#264)

Bumps [firrtl](https://github.com/freechipsproject/firrtl) from `2f007ce` to `118711f`.
- [Release notes](https://github.com/freechipsproject/firrtl/releases)
- [Commits](https://github.com/freechipsproject/firrtl/compare/2f007ce47ad0ed7cad937c332c63718c414c250b...118711f9a00e4242f54c59275e23c8a6d48e87e8

)

---
updated-dependencies:
- dependency-name: firrtl
  dependency-type: direct:production
...

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